Universal Audio Apollo X4 Thunderbolt 3 Audio Interface Overview:

Elite Audio Conversion and Four Unison Preamps, All on your Desktop.Apollo x4 allows musicians and producers to easily track, overdub, and mix larger projects with elite-class A/D and D/A conversion, four Unison-enabled preamps, and QUAD Core realtime UAD plug-in processing all in a desktop Thunderbolt 3 audio interface for Mac and Windows.Built upon UA’s 60-year heritage of audio craftsmanship, Apollo x4 confidently outperforms everything in its class, with 127 dB D/A dynamic range and an included bundle of UAD analog emulation plug-ins, giving you a fully-stocked analog studio, right on your desktop.Four Unison Preamps: Get the Genuine Sound of Neve, Helios, API & MoreApollo x4 features four Unison-enabled mic preamps, letting you track through exacting mic preamp emulations from Neve, Helios, API, Manley, Universal Audio and many more. Exclusive to UA Audio Interfaces, Unison technology nails the tone of these sought-after tube and solid state mic pres including their input impedance, gain stage “sweet spots,” and the component-level circuit behaviors of the original hardware.The secret to Unison is its hardware-software integration between Apollo’s mic preamps and its onboard UAD QUAD Core DSP Acceleration. Simply place a Unison preamp plug-in on your mic input in Apollo Console software, and it physically reconfigures the Apollo interface’s impedance so you can tap into the classic sounds of the world’s most recorded mic preamps.